Effects of parameters in Ni–Mo catalysed hydrocracking of vacuum residue on composition and quality of obtained products

Morawski, I.; Mosio-Mosiewski, J.

doi:10.1016/j.fuproc.2006.01.006

Cited by 44 publications

(42 citation statements)

References 10 publications

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“…Nowadays, many researchers are focusing on improving catalytic hydrocracking processes by using a fixed-bed, ebullated-bed or slurry-phase reactor [3][4][5]. Catalysts for catalytic hydrocracking of heavy oils have undergone two development phases, namely, heterogeneous solid powder catalysts and homogeneous dispersed catalysts [6].…”

Section: Introductionmentioning

confidence: 99%

Macroporous NiMo/alumina catalyst for the hydrocracking of vacuum residue

Kim

Nguyen‐Huy

Shin

2014

Reac Kinet Mech Cat

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We prepared a macro-mesoporous NiMo/alumina catalyst by the introduction of macroporosity to an alumina support, and tested its catalytic performance in the hydrocracking of vacuum residue for the first time. In this reaction, the use of the macro-mesoporous NiMo/alumina catalyst clearly led to a more desirable product distribution-a higher liquid yield and lower gas yield-than a mesoporous NiMo/alumina catalyst. This indicates that the macro-mesoporous catalyst structure facilitated hydrogenation relative to the mesoporous catalyst; for the latter, hydrocracking was relatively dominant. N 2 adsorption/desorption experiments confirmed that NiMo impregnation reduced the pore size and volume, as well as the surface area, implying that the NiMo phases were located inside the mesopores and macropores. Macroporosity in the alumina support played an important role in improving the accessibility of vacuum residue to the NiMo active sites located inside pores, which are responsible for hydrogenation. By promoting hydrogenation, the macro-mesoporous NiMo/alumina catalyst increased the liquid yield of the hydrocracking of vacuum residue.Electronic supplementary material The online version of this article (

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Section: Introductionmentioning

confidence: 99%

Macroporous NiMo/alumina catalyst for the hydrocracking of vacuum residue

Kim

Nguyen‐Huy

Shin

2014

Reac Kinet Mech Cat

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“…Alkanes are dehydrogenated on the metallic sites and then isomerized or cracked on the acid sites through classical and non-classical carbenium ion chemistry [12][13][14]. The most conventional hydrocracking catalysts used for the production of gasoline or diesel from crude oil are NiMo and NiW catalysts supported on alumina [15], silica-alumina [16], fluorine-doped alumina [17], USY zeolite [18], and molecular sieves [19]. Pd or Ptloaded solid acid catalysts have also been investigated for the hydrocracking of heavy hydrocarbons [20].…”

Section: Introductionmentioning

confidence: 99%

Production of Middle Distillate Through Hydrocracking of Paraffin Wax over NiMo/SiO2–Al2O3 Catalysts: Effect of SiO2–Al2O3 Composition on Acid Property and Catalytic Performance of NiMo/SiO2–Al2O3 Catalysts

et al. 2008

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SiO 2 -Al 2 O 3 supports with different composition were prepared by a precipitation method in order to control the acid property of SiO 2 -Al 2 O 3 supports. NiMo/ SiO 2 -Al 2 O 3 catalysts were then prepared by an impregnation method and sulfided for use in the production of middle distillate through hydrocracking of paraffin wax. It was revealed that MoS 2 phase was dominantly formed in the NiMo/SiO 2 -Al 2 O 3 catalysts, while Ni-Mo-S phase was not detected due to its fine dispersion. Acidity of NiMo/SiO 2 -Al 2 O 3 catalysts measured by NH 3 -TPD experiments showed a volcano-shaped curve with respect to SiO 2 content. Acidity of the catalysts played an important role in determining the catalytic performance in the hydrocracking of paraffin wax. Conversion of paraffin wax was monotonically increased with increasing acidity of the catalyst, while yield for middle distillate showed a volcano-shaped curve with respect to acidity of the catalyst. Thus, optimal acidity of NiMo/SiO 2 -Al 2 O 3 catalysts was required for the maximum production of middle distillate through hydrocracking of paraffin wax.

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“…The role and importance of catalysts in the hydrocracking processes has been intensely studied [14][15][16][17][18][19][20][21][22][23][24][25][26][27]. Generally, the hydrocracking catalysts composed of noble metals or transition metals paired with a mesoporous support have dual functions in the reaction process.…”

Section: Introductionmentioning

confidence: 99%

“…These are (a) cracking C-C bonds from high-molecular weight hydrocarbons and (b) hydrogenating the unsaturated hydrocarbons formed in the cracking steps and/or were already present in the feedstock [17,18]. The most conventional catalysts are NiW, NiMo, and CoMo bimetallic paired on a number of supports, including zeolite, silica-alumina, and alumina [19][20][21][22]. Recently, Pd-based catalysts have also been widely used due to their high activity on hydrocracking sulfur-free heavy hydrocarbons [24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Mesoporous Silica-Supported Palladium Catalysts for Biofuel Upgrade

Ling

Reddy

Hill

et al. 2012

Journal of Nanotechnology

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We report the preparation of two hydrocracking catalysts Pd/CoMoO 4 /silica and Pd/CNTs/CoMoO 4 /silica (CNTs, carbon nanotubes). The structure, morphologies, composition, and thermal stability of catalysts were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, transmission electron microscopy (TEM), energy-dispersive X-ray (EDX), and thermogravimetric analysis (TGA). The catalyst activity was measured in a Parr reactor with camelina fatty acid methyl esters (FAMEs) as the feed. The analysis shows that the palladium nanoparticles have been incorporated onto mesoporous silica in Pd/CoMoO 4 /silica or on the CNTs surface in Pd/CNTs/CoMoO 4 /silica catalysts. The different combinations of metals and supports have selective control cracking on heavy hydrocarbons.

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Effects of parameters in Ni–Mo catalysed hydrocracking of vacuum residue on composition and quality of obtained products

Cited by 44 publications

References 10 publications

Macroporous NiMo/alumina catalyst for the hydrocracking of vacuum residue

Macroporous NiMo/alumina catalyst for the hydrocracking of vacuum residue

Production of Middle Distillate Through Hydrocracking of Paraffin Wax over NiMo/SiO2–Al2O3 Catalysts: Effect of SiO2–Al2O3 Composition on Acid Property and Catalytic Performance of NiMo/SiO2–Al2O3 Catalysts

Preparation of Mesoporous Silica-Supported Palladium Catalysts for Biofuel Upgrade

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